Search found 20 matches

by Jacob Shalkevich 1A
Fri Mar 11, 2016 9:09 pm
Forum: *Amines
Topic: Primary, secondary, tertiary
Replies: 2
Views: 840

Primary, secondary, tertiary

Do you need to indicate primary, secondary, tertiary, or quaternary when you are naming a molecule with an Amine???
by Jacob Shalkevich 1A
Sun Mar 06, 2016 6:26 pm
Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
Topic: Torsional & Steric Strain
Replies: 2
Views: 472

Re: Torsional & Steric Strain

"Torsional Strain: When rotating a molecule around a bond, the torsional strain is the repulsion caused by the electrons in between different groups when they pass by each other. Steric Strain: Strain caused by the electrons in between different groups. Steric strain cannot be lessened by rotat...
by Jacob Shalkevich 1A
Thu Mar 03, 2016 5:18 pm
Forum: *Cycloalkenes
Topic: Introduction to Organic Chemistry booklet
Replies: 1
Views: 433

Introduction to Organic Chemistry booklet

What will we need to know for the final from the intro to ochem book? For example, bicycloalkanes, spiroalkanes, aromatic hydrocarbons. Will we need to know all of these things?
by Jacob Shalkevich 1A
Tue Mar 01, 2016 11:10 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1218258

Re: Chemistry Jokes

[Na]^16 ... BATMAN!!!

It works a little better if you sing it out.
Looks like chemistry, but really it is not.
by Jacob Shalkevich 1A
Tue Mar 01, 2016 11:08 pm
Forum: *Cycloalkanes
Topic: Methyl-Chloro Substituent
Replies: 1
Views: 433

Methyl-Chloro Substituent

If we have a cyclohexane, for example with a methyl substituent on one side and a methyl substituent on the other side that also has chlorine attached to it, would we use the name 1,4-chlorodimethylcyclohexane? Or the name 1-chloromethyl-4-methylcyclohexane.
I hope this question makes sense.
by Jacob Shalkevich 1A
Mon Feb 29, 2016 4:31 pm
Forum: *Alkenes
Topic: Alkenes Cis v. Trans Quiz
Replies: 1
Views: 559

Alkenes Cis v. Trans Quiz

Are there any ways that there can be an Alkene on the quiz that is not Cis or Trans?
If yes, what is an example?
by Jacob Shalkevich 1A
Mon Feb 29, 2016 4:27 pm
Forum: *Alcohols
Topic: Functional Group Distinction
Replies: 1
Views: 372

Functional Group Distinction

How do you know which functional group takes priority if there are multiple functional groups in an organic molecule?
by Jacob Shalkevich 1A
Mon Feb 29, 2016 4:27 pm
Forum: *Alcohols
Topic: Functional Group Distinction
Replies: 1
Views: 313

Functional Group Distinction

How do you know which functional group takes priority if there are multiple functional groups in an organic molecule?
by Jacob Shalkevich 1A
Mon Feb 08, 2016 5:40 pm
Forum: Calculating Work of Expansion
Topic: Ideal Gases Formula Pt. 2
Replies: 2
Views: 344

Ideal Gases Formula Pt. 2

When might you use U=3/2nRT; Cv=3/2R; Cp=5/2R?
I am yet to come across a practice problem in which I need it.
by Jacob Shalkevich 1A
Sun Jan 24, 2016 5:26 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Intensive/Extensive
Replies: 4
Views: 389

Intensive/Extensive

I am going through previous midterms, and one of them asks if Energy, E, is an intensive or extensive variable.
It was extensive, but why? What is the difference between and intensive and extensive variable?
by Jacob Shalkevich 1A
Mon Jan 18, 2016 5:26 pm
Forum: Phase Changes & Related Calculations
Topic: Reversible vs. Irreversible
Replies: 2
Views: 272

Reversible vs. Irreversible

Will reversible expansions always require more work than irreversible? What are some examples of reversible expansions and irreversible expansions.
by Jacob Shalkevich 1A
Thu Dec 03, 2015 4:14 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1218258

Re: Chemistry Jokes

You know, I would tell a chemistry joke, but all the good ones argon.
by Jacob Shalkevich 1A
Sun Nov 29, 2015 7:24 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Molecular Orbital Theory Video
Replies: 1
Views: 266

Molecular Orbital Theory Video

Chem 14A video ;).mp4 [ 406.27 MiB | Viewed 266 times ]

by Jacob Shalkevich 1A
Mon Nov 16, 2015 8:30 pm
Forum: Naming
Topic: Naming convention
Replies: 1
Views: 268

Naming convention

If we alternate between the new and the old naming conventions, will we be docked points? Even if it is technically correct?
by Jacob Shalkevich 1A
Tue Nov 10, 2015 9:37 pm
Forum: Naming
Topic: Coordination Compounds
Replies: 2
Views: 393

Re: Coordination Compounds

What are you using to memorize all of these compounds?
by Jacob Shalkevich 1A
Sun Nov 01, 2015 3:19 pm
Forum: Lewis Structures
Topic: How many unpaired electrons does the molecule O2 have?
Replies: 2
Views: 13036

Re: How many unpaired electrons does the molecule O2 have?

In the textbook, it says that the molecule O2 has 2 unpaired electrons. However, when I draw the Lewis structure (and count the number of valence electrons, which happen to be even), no electrons are unpaired. You must be careful. If they ask for the number of unpaired electrons, they are looking f...
by Jacob Shalkevich 1A
Tue Oct 27, 2015 11:35 am
Forum: Hybridization
Topic: Period Number in Hybridization
Replies: 3
Views: 467

Re: Period Number in Hybridization

So we don't need to worry about the period number?
by Jacob Shalkevich 1A
Mon Oct 26, 2015 12:56 pm
Forum: Hybridization
Topic: Period Number in Hybridization
Replies: 3
Views: 467

Period Number in Hybridization

When I see hybridization of an element, people sometimes post a period number before. For example, Carbon would be 2sp^3, when it has four bonds. Would it be incorrect to only write sp^3? Is there a right or wrong way?

Thanks!
by Jacob Shalkevich 1A
Thu Oct 08, 2015 10:28 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Orbitals, value of l
Replies: 5
Views: 729

Re: Orbitals, value of l

Because D is always one below S and P in energy level(n), and F two below, does it mean that the D and F orbitals will never be involved in bonding with any other atoms? If not, what types of bonds would include D and F?

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